一种新颖的同时考虑中点电位平衡和窄脉冲消除及死区补偿的三电平空间电压矢量脉宽调制方法

该文引进了一种简洁高效的三电平SVPWM算法。在此基础上，提出一种中点电位控制和窄脉冲消除方法，同时进行了死区的补偿。仿真和实验结果表明，该方法实现简单，输出波形谐波含量小，中点电位得到很好的控制，并较好地解决了窄脉冲问题。同时由于进行了死区补偿，使逆变器在低频输出时波形明显改善，提高了系统在低频时的转矩输出。在用TMS320LF2407 DSP为开发平台的三电平实验样机上取得了良好的效果。

A NOVEL THREE-LEVEL SVPWM ALGORITHM CONSIDERING NEUTRAL-POINT CONTROL AND NARROW-PULSE ELIMINATION AND DEAD-TIME COMPENSATION

This paper introduces a simple but effective three-level SVPWM algorithm. On the basis of this algorithm, a simple algorithm considering neutral-point balancing, narrow-pulse elimination and dead-time compensation is proposed. The result of test verified that this algorithm is simple to be carried out, harmonics in output waveform are small, neutral-point potential can be controlled very well and narrow-pulse problem is solved as well. Because dead time is compensated at the same time, the output waveform is improved and output torque is strengthened in low frequency. Finally, good result was achieved on a three-level model inverter developed with one TMS320LF2407 DSP.